Pump.



mvENToR, d( MAL,

ATTORNEYS PAIBNTED JAN. 8, 1907.

P. H.. DPI'S.

PUMP

APPLICATION FILED JAN.9.1 906.

No. 840,919.I

,zo with the result that the ower necessary to screw-couplings c.

UNITED sTATEs PATENT oF-FICE. PHILIP H. nais, or wasHING foiilIIsTRIcT orcoLUMBIA.

l i PUMP.

No` 840,919. v y Specification of Letters Patent. Patented Jan. 8, 1'907.

' Appunti@ nea' January 9, 190s. serial No. 295,218.

To all whom it may GOYwWI/r as well as on the upstroke, sustained by the Be it known that I, PHILIP H'. DEIs, a citilifting means. Then such column and the zen of the United States, residing in Washvbalancer thereof and of the lifting *mear/rsr ington, District of Columbia, have invented itself together will remain truly in balance'at 5 certainew Improvements in Pum s; and I all times, except, of course, for only sub- 6o do hereby declare the following to e a full, stantially the amount of liquid which on each f clear, and exact description of the invention, upstroke is to be delivered. This end I have such as will enable others skilled in the art to' accomplished in and by the present invenwhich it appertains to make and use the tion, one form of which for the sake of illus-- ro same, reference being had to the accompanytration I now proceed -to describe in detail, 6 5 ing drawings, and to characters of refence with reference to the accompanying drawmarked thereon, which form a part of this. ings, wherein speciiication. Figure l shows my improved pump in ver 4 My invention is an improvement in pumps ticalv section substantia ly throughout; and' 15 of the reci ro'cating type; and it has for Its Fig. 2 is a similar view, somewhat enlarged, 7o essential o ject to so construct and arrange of the essential parts of the invention. the operating parts ofthe lifting means that a, is the well; b, a well-pipe forming th the latter may be approximately balanced at conducting means and comprising, referall times by suitable means for that purpose, ably, tubular sections connected toget er by 7 5 maintain delivery is on y that very small d is the nozzle f the well-pipe; e, a lever amount which is needed simply to raise subfulcrumed on the well -pipe or otherwise; stantially so mu 'h liquid as is to be disf, a weight or we'ghts suspended from dne charged. end of the lever, and g the sucker-rod ivot- 25 Means for balancing,1 so called, the load ally connected to the other end o1 said ever. 8o on the lifting means of an ordinary lift-pump- The sucker-rod is tubular, as shown, and has have been proposed, the same having usually a port h near its upper end communicating taken the form of a weight or its equivalent with .its bore. Onto the ,lower end of this connected with the lifting means in such `sucker-rod is screwed a bushing i, which is in 3o manner as to counterbalance its load-fi. e., turn screwed into the upper end of the tubu- 85 the resistance necessary to be overcome in lar portion y' of a plunger whose main or body raising the lifting means. Such means, howportion k nearly fits the Ainside of the wellever, when connected to lift-pumps of the ipe. Anintegral horizontal Wall Zconnects common type having an upwardly-moving the tubular portion j and body ortion lc,n

3 5 valve in the bottom ofthe well-pipe, as well having orifices m, through whic u ward 9o as a similar valve in the plunger orsucker, movement of liquid under pressure Lbelow can obviously never fully cover the object in said wall is permitted, but its downward view, because if there is' any gain on the up.- movement therethrough prevented by an anstroke there must be a corresponding loss on nular valve n, seating squarely against said 4o the downstroke. The resistance overcome Wall Z and being penetrated by and movable 95 on the upstroke now manifests itself to the vertically freely on the tubular portion y'. full extent on the downstroke in the form of The lower end o of tubular portion y' is o` en the action of gravity on the weight. These downwardly, and it is provided with o ces considerations and extensive experiments, p, leading to the annular space between itself 45 some of the results of which, are illustrated in and the body portion k. roo some of my previous patents, have led me to a leather cu which Jlits snu ly in the conclude that in order to permit the weight well-pipe, being he d between the Iower end or its equivalent to be an eectual and true of body portion 7c of the plunger by a sleeve r,

' balancer at all times the column of 1i uid whichis screwed onto'the parto of the tubu- 5o which stands in the well-pipe must not urlar portion fi up against said cup. j This cup :o5 ing the downstroke stan dormant or neucompletes the character of the plunger as l tral, as is the case where it rests during the such and makes it, ignoring details of condownstroke su ported by the valve at the struction, the substantial equivalent of the foot of the we -pipe, as in the ordinaryliftsucker or plunger of the ordinary lift-pump,

5 5 pump, but must continue on the downstroke, Into the lower end of the sleeveris screwed 1 1o a spider s or other similar part having orifices t, and on this spider rests a valve u, which is penetrated byiand movable vertically freely on the tubular stem e of said spider, the same being adapted top revent downward, but premit free upward, movement of liquid through said oriiices.

' The bottom of the well-pi e is closed by a plug w, held therein by a ayonet-joint and into this isscrewed a stud y, having a key z-on the to thereof. This stud receives the lower end @Fa spindle 1, held permanently therein by a pin 2 and penetrating and snugly fitting the vstem o of spider s, which stem may have a land 3 to prevent liquid escape between te spindle and stem. Stem e has a cross-cut 4 to receive the key z of stud y. The stud whereby the spindle is anchored te the plug w is adapted to be screwed intothe latter by introducing down into the well-pipe the assembled plunger, sleeve, spider, and stemwith the key and cross-cut engaged and then turning the stud (thus linterlocked with these parts against relative rotation) in the plu lw. Above the plug 'w the Well-pipe has oriiibes 5, aording 'access from the well to the well-pipe.

The upper end of spindle 1, which is reduced, carries a piston comprising'the body portion 6, having ports 7 therethrou h, a nut 8, and a' leather cup 9 snugly tting t e tubular portion j of the plunger and clamped between parts 6 and 8. The extremity of the s indie is upset to keep the gliston thereon.

valve 10 is pressed upwar I y against the part 6 by a spiral spring 11, surrounding the spindile 'and compresse between the valve anda collar 12 on the s indle7 acting to normally close. ports 7. 1i) wire-gauze 13., carried by the part 6, prevents grit and other foreign matter from entering .throu h the tubular sucker-rod and ports 7 of the iston and .preventing the snug seating of va ve 1'0.

, Operation: Fig. l shows the parts of the half-stroke position of the plunger. Fig. '2 shows the parts when the plunger is at its lowest limit. I use the exressions rime column .and .prime'jload" herein to 'ene, on the .one hand, the liquid column extending from the lifting means to subs' antially the point of :discharge (the nozzle) when the lljtmeans is at its highest limit, and, on the iger hand, the combined weight of such column and the lifting means in the same positien ofthe lifting means. In the use of such expressions .as upwardly Aand downwardly it will be understood that I speak relatively and without referring only to vertical .direction On anupstroke of the plunger .the chamber 14, which is formed by thev cylindrical wall of the plunger, the piston, and the valved lowerendofsleeve 71,'is caused to in effect contract, because the piston stands xed while the plunlger rises, forcing the liquid which we wil assume vis already contained therein through the pressureescape thereof (orifices p and m) past the valve n. Substantially the quantity of liquid by which the prime column is thus augmented re resents what is now caused to be discharge from the nozzle as the plunger ascende. 0n the downstroke of the plunger the chamber 14 in eect expands, the result of which ward a reduction of pressure therein permits liquidfrom the sup va the upstroke or downstroke, ignoring, of

course, the load represented by so much li uid as has augmented the primecolumn.

e work on the power source is therefore only such .as is necessary on each upstroke to raise substantially the quantity to be deliv`4 ered. These conditions, moreover, may exist without regard to the capacity of the pump or the working depth.

It is essential in the construction shown to provide against the promotion of a vacuum or an accumulation of such liquid as might pass the iston and clog its action in the interior oi" t -e .plunger above the piston, hence the use o'f a tubular sucker-rod having the port hopen to the atmosphere and .of the spring actuated valve 10, the former of which maintains an e uilibrium of pressures at all times above an below the the latter of which allows liquld caught above the piston to have adequate escape.

I desire -to emphasize the fact that in my pump the parts are so -constructed that when the balanbing-means is attached the prime load is atal'l timesheld in a state of suspense (or balanced) by the balancing means, so'

piston and is twofold: first, the tendency to- IOO IIO

that when the pump'is set in motion all the .power required Ais only that necessary to lift the amount of liquid which the pump discharges. I

Having thus lfully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a pump, the combination, with a conductin means, of a lifting means having an upwar ly-opening valve constantly subj-ect to .the closing pressure of the rising-column, and means for maintainin a pressure tending to open said valve whlch shall be greater durin the upstroke and less during the downstro e than that due to said column, whereby to maintain the rime load substantially constant during a tu l stroke in lboth directions.

IOv

.izo

- tain the prime load 2. Inxa pump, the combination, with a conductin means, of a lifting meanshaving an upwar l -o ening valve constantly sub- *ject to the closing pressure of the rising coluring the downstroke than that due to said column, whereby to maintain the rime load substantially constant during a fu l stroke in both directions.

3. In a pump, the combination, witha conductin means, of a lifting means having an upwar l -opening valve constantly subject to the closing pressure of the rising column, and means for` maintaining a pressure tending to open said valve which shall be greater during the upstroke than that due to said column and substantially the same during the downstroke as it is when the lifting means is at` rest, whereby to maintain the rime load substantially constant during a full stroke in both directions.

4. In a pump, the combination, with a conductin means, of a lifting means having an upwar ly-opening valve Iconstantly subject tov the closing pressure of the rising column, a balancer for the prime load connected with the lifting means, 4and means for maintaining a pressure tendin to open said valve which shall be reater uring the upstroke. and not more uring the downstroke than that due to said column, whereby to main-I substantially constant during a full stroke in both directions.

5. The combination, with the conducting means, of a plunger having a vertical space therein, upwardly-o enin relatively superposed valves movab ewit and relatively ,to said lunger, and a iston in said space with relatlon to which said plung'er is movable, the lower valve being relatively below said space andthe pressure escape by the upper valve being relatively'between said lower valve and the piston, substantially as described.

6. The combination, with the conducting means, of a tubular plunger, a fixed piston arranged in the space of said plunger, and upwardly-opening relatively superposed valves movable with and relatively to said plunger, the lower valve being relatively be ow said space and theA ressure escape by the upper valve being re atively, between said lower valve and piston, 7. The combination, with the:.conducting means, 'of' a tubular plunger, a tubular sucker-rod connectedv to the plunger and affording atmospheric communlcatlon to the s ace thereof, a fixed plston arranged in said p un er, upwardly-o ening relatively superpose valves movab ewith and relatively to said plunger, the lower valve being relatively below said space and the pressure escape by the upper valve being re atively below the valve and the piston, substantially as described. v

In testimony that I claim the foregoing I have hereunto set my January, 1906.

' PHILIP H. 'DEIS Witnesses: v

JOHN W. STEWARD, WM. D. BELL.

substantially as described.

hand this 8th day of 

